47666808 has 144 divisors (see below), whose sum is σ = 153387000. Its totient is φ = 13329792.

The previous prime is 47666777. The next prime is 47666813. The reversal of 47666808 is 80866674.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 208038 + ... + 208266.

Almost surely, 2^47666808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47666808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76693500).

47666808 is an abundant number, since it is smaller than the sum of its proper divisors (105720192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47666808 is a wasteful number, since it uses less digits than its factorization.

47666808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 47666808 is about 6904.1152945182. The cubic root of 47666808 is about 362.5812624794.

The spelling of 47666808 in words is "forty-seven million, six hundred sixty-six thousand, eight hundred eight".